Chinese Journal of Oral Implantology ›› 2024, Vol. 29 ›› Issue (4): 352-357.DOI: 10.12337/zgkqzzxzz.2024.08.010

• Original Article·Clinical Research • Previous Articles     Next Articles

Biological complications of butt-joint dental implants: a retrospective case analysis

Chen Zhenqi, Yan Qi, Chen Yan, Shi Bin   

  1. Department of Dental Implantology, Hospital of Stomatology, Wuhan University, Wuhan 430079, China
  • Received:2023-10-26 Online:2024-08-30 Published:2024-08-16
  • Contact: Shi Bin, Email: shibin_dentist@whu.edu.cn, Tel: 0086-27-87686600

Abstract: Objective To retrospectively analyze cases of biological complications of the butt-joint dental implant system (Zimmer, America) and explore relevant risk factors. Methods Cases of biological complications occurring with butt-joint implant systems (Zimmer) at the Department of Dental Implantology, Hospital of Stomatology, Wuhan University from 2012 to 2022 were analyzed. Results A total of 65 implants were identified to have biological complications, with 1 624 implants being reviewed overall. Six implants developed peri-implantitis, while 59 implants developed peri-implant mucositis. The average patient age was (56.20±11.46) years, and the mean loading time was (4.06±2.36) years. Conclusion The maxillary and molar regions are common sites for biological complications associated with butt-joint dental implants. Special attention should be paid to the occlusal design of distal free-end implant restorations to avoid the adverse effects of occlusal overload. Although the "cold welding" effect is advantageous in reducing the impact of microleakage, it increases the risk of mechanical complications.

Key words: Peri-implant diseases, Peri-implant mucositis, Peri-implantitis, Butt-joint